dekametre vs dkm

dekametre and dkm both are nouns.

Word	Noun	Adjective	Verb	Adverb
dekametre	Yes	No	No	No
dkm	Yes	No	No	No

As nouns, dekametre and dkm are synonyms defined as:

Other synonyms of dekametre include dam, decameter, decametre, dekameter.

dekametre (noun)	dkm (noun)
a metric unit of length equal to ten meters	a metric unit of length equal to ten meters